<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- table表格区域 -->
      <el-table :data="goodslist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="120px"></el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="90px"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="180px">
          <template slot-scope="scope">{{scope.row.add_time | dateFormat}}</template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="editById(scope.row.goods_id)"
            ></el-button>
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      ></el-pagination>
    </el-card>
    <!-- 编辑对话框 -->
    <el-dialog title="提示" :visible.sync="dialogVisible" width="30%" :before-close="handleClose">
      <!-- <span>这是一段信息</span> -->
      <el-form
        :model="editFormData"
        :rules="editFormRules"
        ref="editFormDataRef"
        label-width="70px"
      >
        <el-form-item label="商品名">
          <el-input v-model="editFormData.goods_name" disabled></el-input>
        </el-form-item>
        <el-form-item label="商品价格">
          <el-input v-model="editFormData.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="商品重量">
          <el-input v-model="editFormData.goods_weight"></el-input>
        </el-form-item>
        <!-- 商品分类 -->
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editSubmit">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      // 商品列表
      goodslist: [],
      // 总数据条数
      total: 0,
      dialogVisible: false,
      editFormRules: {
        attr_name: [
          { required: true, message: '请输入邮箱', trigger: 'blur' }
        ]
      },
      // 查询时存储获取到的表单数据对象
      editFormData: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        // 商品所属的分类数组
        goods_cat: []
      }
    }
  },
  created () {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList () {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })

      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败！')
      }

      this.$message.success('获取商品列表成功！')
      console.log('调用goods方法获取的商品列表', res.data)
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    async removeById (id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除！')
      }

      const { data: res } = await this.$http.delete(`goods/${id}`)

      if (res.meta.status !== 200) {
        return this.$message.error('删除失败！')
      }

      this.$message.success('删除成功！')
      this.getGoodsList()
    },
    // 跳转到添加的组件页面
    goAddpage () {
      this.$router.push('/goods/add')
    },
    // 编辑修改商品
    async editById (id) {
      console.log('要编辑的商品ID——', id)
      const { data: res } = await this.$http.get('goods/' + id)
      if (res.meta.status !== 200) return this.$message.error('查询用户失败！')
      this.editFormData = res.data
      console.log('要编辑的商品的信息', res.data)
      this.dialogVisible = true
    },
    handleClose (done) {
      this.$confirm('确认关闭？')
        .then(_ => {
          done()
        })
        .catch(_ => { })
    },
    // 编辑完成后提交
    editSubmit () {
      this.dialogVisible = false
      this.$refs.editFormDataRef.validate(async valid => {
        console.log(valid)
        if (!valid) return false
        // 发起修改用户信息的数据请求
        // else {
        //   console.log('编辑后的信息', this.editFormData)
        // }
        else {
          const { data: res } = await this.$http.put('goods/' + this.editFormData.goods_id, {
            goods_name: this.editFormData.goods_name,
            goods_price: this.editFormData.goods_price,
            goods_number: this.editFormData.goods_number,
            goods_weight: this.editFormData.goods_weight,
            goods_cat: this.editFormData.goods_cat
            // params: this.editFormData
          })
          if (res.meta.status !== 200) {
            this.$message.error('修改商品信息失败！')
          }
          this.$message.success(res.meta.msg)
          // 添加成功之后隐藏对话框
          this.dialogVisible = false
          // 重新获取商品列表数据
          this.getGoodsList()
        }
      })
    }
  },
  computed: {
    cateId () {
      if (this.editFormData.goods_cat.length === 3) {
        return this.editFormData.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style lang="less" scoped>
</style>
